Evidence of the ability of the SUMO device to create a submucosal pocket and resect the overlying mucosa in human colon or stomach. [ Time Frame: (day one)The colon or stomach tissue is evaluated in the Operating Room immediatley following excision. Subjects are not followed after using the excised tissue in the operating room. ] [ Designated as safety issue: No ]

Assess the feasibility of the SuMO device for creation of a submucosal pocket and resecting the overlying mucosa in a segment of excised human colon or stomach.

Original Primary Outcome Measures ICMJE (submitted: March 24, 2011)

Evidence of the ability of the SUMO device to create a submucousal pocket and resect the overlying mucosa in human colon or stomach. [ Time Frame: (day one)The colon or stomach tissue is evaluated in the Operating Room immediatley following excision. Subjects are not followed after using the excised tissue in the operating room. ] [ Designated as safety issue: No ]

Assess the feasibility of the SuMO device for creation of a submucosal pocket and resecting the overlying mucosa in a segment of excised human colon or stomach.

This feasibility trial will evaluate the ability of the SuMO Tissue Access and Resection System (Apollo Endosurgery, Austin, Texas). The SuMO System utilizes balloons to create a submucosal pocket and electrosurgical cutting device to resect the mucosa. The SuMO elevates the tissue from the underlying muscularis using a balloon to distend the submucosa, similar to what is currently performed with injectable saline in a standard EMR. After dissection of the lesion, a separate cutting device will be utilized to resect the tissue by cutting around the border of the targeted tissue. If needed, a standard loop snare will be used to complete the mucosal resection.

Detailed Description

The subject will already be scheduled for segmental colectomy or gastrectomy.

The colectomy or gastrectomy specimen will be prepared on a side table for an ex vivo endoscopic procedure. The ends of the stomach or colon, if not already stapled closed will be ligated to allow for insufflation. The endoscope will be placed into the excised organ and the SuMO System devices will be deployed away from any areas of excised pathologic tissue, so as not to disrupt the pathologist's evaluation of the excised tissue. The specimen will then be opened and grossly examined for the actual completeness of the submucosal pocket and resection. Mucosal and muscular wall disruptions will be assessed. Again, no interference in the underlying pathology will be performed. If sufficient specimen is present, the SuMO procedure may be repeated on the same specimen.

Following the performance of the EMR by the SUMO balloon system on the ex vivo colon specimen, both the resected piece of tissue and the site of resection will be evaluated pathologically by H and E staining. Specifically, the depth of resection in the ex vivo colon specimen will be determined. In addition, the level of dissection on the removed piece of mucosa will also be identified.

During this procedure still images or a video recording maybe captured, however all images will be taken of the removed specimen. There will not be any patient identifiers on any of the images or DVD's taken during the procedure.

No clinical follow up is required, as the treated area will have already been resected and there is no risk to the patient.

Study Type ICMJE

Interventional

Study Phase

Not Provided

Study Design ICMJE

Intervention Model: Single Group AssignmentMasking: Open Label

Condition ICMJE

Colon Disease

Gastric Disease

Intervention ICMJE

Procedure: Tissue Access and Resection System

This feasibility trial will assess the effectiveness of SuMO System to create a submucosal pocket and resect the overlying mucosa in excised human colonic or gastric tissue

Other Name: SUMO Tissue Access and Resection System

Study Arm (s)

Experimental: SUMO Tissue Access and Resection System

Intervention: Procedure: Tissue Access and Resection System

Publications *

Not Provided

* Includes publications given by the data provider as well as publications
identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.

Recruitment Information

Recruitment Status ICMJE

Completed

Enrollment ICMJE

9

Completion Date

June 2011

Primary Completion Date

June 2011 (final data collection date for primary outcome measure)

Eligibility Criteria ICMJE

Inclusion Criteria:

Male or female over 18 years of age

Established indication for open or laparoscopic or colon resection or gastrectomy